This is exactly the brownie I make when the oven is occupied, when it’s too hot to preheat the whole kitchen, or when a chocolate craving strikes without warning. The air fryer simplifies the classic without turning it into a gimmick: a dense batter, crunchy walnuts, a short and highly controllable bake.

Ingredients :
- Dark chocolate 70% — It provides structure, deep color, and intensity for the brownie. Choose a bar with at least 70% cacao: below that, sugar takes over and the batter becomes softer, less clean in flavor.
- Butter — It adds fudginess and that almost silky feel when the brownie is still slightly warm. If you want a dairy-free version, coconut oil works well, but it will give a rounder, slightly exotic note.
- Eggs — They bind the batter and allow the center to set without becoming dry. Add them when the chocolate has cooled slightly, otherwise you risk cooking them on contact and getting small strands in the batter.
- Coconut sugar or brown sugar — It sweetens, of course, but also helps form that thin crust on top. Coconut sugar gives a more caramelized note, while brown sugar remains more classic and easier to find.


